DAS, DEBARUP et al. Long-term fertilization effects on soil potassium and crop yields in a Vertisol. The Indian Journal of Agricultural Sciences, Delhi, India, v. 89, n. 7, p. 1086–1090, 2019. DOI: 10.56093/ijas.v89i7.91648. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/91648. Acesso em: 24 oct. 2025.